Industry Patents
Patent: 6988820
Method and a Device for Illumination
(Click image for PDF of full patent)
| Patent Number: |
6988820 |
| Title: |
Method and a Device for Illumination |
| Abstract: |
The invention relates to an illumination device for producing an
illumination pattern (6) with a variable shape and luminous intensity to
a target (5). The illumination device comprises at least partly
translucent and light-reflecting optical piece (1), several light sources
(3) producing a conical light pattern, fixed in such a manner that the
position and angle of the same can be adjusted in relation to each other
and/or to the optical piece (1), and an electronic control unit (4) that
is electrically coupled to each light source (3) in such a manner that
the intensity of the light produced by each light source (3) can be
adjusted under the control of the control unit (4). The optical piece (1)
is attached in such a manner that the light beams produced by the light
sources (3) are arranged to propagate at least partly via the optical
piece (1) to the target (5) to be illuminated. The light beams produced
by each light source (3) are arranged to form a part of the illumination
pattern (6) produced by means of the illumination device, the form of
said illumination pattern being substantially independent of the external
form of the optical piece. The invention also relates to a method for
producing an illumination pattern (6) with a variable shape and luminous
intensity to a target. In the method, conical light patterns are produced
by means of several light sources (3), of which light patterns at least
some are directed via the optical piece (1) to the target (5) to be
illuminated. The shape of the illumination pattern (6) produced by means
of the method is substantially independent of the external shape of the
optical piece.
|
| Country of Issue: |
US |
| First Named Inventor: |
Drufva |
| Assignee: |
|
| Continuation or Divisional of: |
|
| International Classification: |
F21V 5/00 |
| US Classification: |
362/559 |
| Issue Date: |
01-24-2006 |
| Filing Date: |
12-20-2001 |
| Application : |
10/451257 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6988820 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6988820 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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